Gaya APA
Tisdale, S., Nelson, W. (1975).
Soil Fertily And Fertilizers Third Edition .
London:
Collier Macmillan Publishers.
Gaya MLA
Tisdale, Samuel., Nelson, Werner.
"Soil Fertily And Fertilizers Third Edition".
London:
Collier Macmillan Publishers,
1975.
Text.